After upgrading to Call Manager 10.5, it seems the ability to a decline an incoming line group call has been removed. Is this a setting that can be adjusted?
These is a simple way to do this.
Make sure this file you create is a simple .txt file that just contains the number. It also needs to reside on a web server.
In the UCCX script, use the SET step to change a string variable to this value in the .txt...
UCCX cannot route calls based on specific Not Ready reason codes. It will allow you to route calls based on the agents being in Ready/Not Ready states with the "Get Reporting Statistic" step but not specific Not Ready reason codes.